DPF efficiency below threshold on Citroën HDi — same DV6/DW10 Eolys-additive story as Peugeot.
Citroën P2002 — DPF efficiency below threshold on Citroën HDi — same DV6/DW10 Eolys-additive story as Peugeot. Typical UK independent garage cost: £140–£1400.
What actually causes P2002 on a Citroën
Citroën C4 Picasso and C5 with HDi are notorious for Eolys-related P2002. The fluid pump fails as well as the tank running dry — check both. Berlingo van use (constant short trips) accelerates the problem.
Citroën engines that log P2002
- 1.6 HDi DV6 (C3/C4/Berlingo)
- 2.0 HDi DW10 (C4 Picasso/C5)
How we diagnose P2002 on a Citroën
- Inspect Eolys fluid level and pump operation
- Read DPF differential pressure live
- Top up Eolys, reset counter via Diagbox
- Forced regen attempt before quoting replacement
The common misdiagnosis to avoid
Quoting a new DPF without diagnosing the Eolys system means it'll block again in 12 months — fix the cause.
Citroën P2002 repair cost in the UK
Expect £140–£1400 including parts and labour at an independent garage. Main-dealer quotes on Citroën are usually higher for the same job, and the spread exists because the cheap cause and the expensive cause throw the same code — pay for the diagnosis before you pay for parts.
Bob's workshop tip
C4 Picasso HDi P2002 + cold months = Eolys pump struggling in low temps. Fresh fluid often revives it.
Codes usually seen alongside P2002 on Citroën
- P2463
- P1471
Symptoms drivers report with P2002
- The 'Engine Service Now' message on the dash, often without a limp mode initially.
- Thick black soot deposits around the inside of the tailpipe (it should be clean enough to eat off).
- A heavy smell of diesel fumes inside the cabin when sitting at traffic lights.
- The car seems to perform fine but the 'DPF Full' warning keeps popping up every 50 miles.
- Excessive cooling fan noise because the car is constantly trying (and failing) to start a regeneration.
Repairs that clear P2002
- Static regen on scan tool
- Replace pressure sensor
- Injector leak-off test
- Chemical DPF clean, replace if blocked >80%
For the generic, all-makes explanation of this code — meaning, every known cause and UK cost bands — see our P2002 guide.